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I'm a mobile mechanic, I'm not the owner so I'm only able to relay what was reported to me. I was asked to take on the job of a head gasket on a...
A few years back Mendel and ChapmanF were involved in discussions on bypassing a gen 4 Prius exhaust heat exchanger. I performed this mod in...
like denying the gen 4 heat exchanger coolant leak?
What happens if you search ‘gen 4 Prius exhaust gas heat exchanger repair’?
how is the coolant level? some gen 4's develop leaks at the exhaust heat exchanger
What years did the heat exchanger issue affect? Was it only the early Gen 4 models?
Different how? Gen 3's is after both catalytic converters and before the resonator. Is that not where Gen 4's is?
...then their constant-improvement motto produced the Gen 4 heat exchanger known for leaking coolant into the exhaust. Maybe Gen 5 will re-improve...
What puzzles me is that the exhaust heat recirculation system was introduced a dozen years ago in Gen 3, and yet I just haven't been hearing such...
Well, the Gen 3 and Gen 4 heat exchangers do look rather different. They seem to have a different supplier or just a different design. And...
i agree totally, but it depends on your risk tolerance. so far, nothing major, and hopefully they'll get the issues cleared up quickly. but the...
Or Rav4prime train horn?
The Gen4s are great cars so it should be a good buy. Keep an eye on your coolant level as the heat recovery exchanger does tend to develop leaks....
gen 4 in a heartbeat. better car, less head gasket issues, brake actuators, inverters. just watch out for the potential heat exchanger coolant leak
you might be able to find some info at toyota.com/owners. bear in mind that some of the early gen 4 prius had an exhaust heat exchanger leak issue.
no argument that overall, toyotas are the most mechanically reliable cars on the road. gen 4 does sound like a good one, other than the coolant...
What's weird is gen 3 had the exhaust heat exchanger too, and theirs never developed any special reputation for springing leaks. Something about...
My 2017 has never leaked. Makes sense to put the heat recovery downstream from the catalytic converter. I never looked into the details....
i have 86,000 on my pip, 30k only on the engine, and i'm aready having problems. but we don't know the exact cause on gen 3, and we know nothing...
...there are increasing reports of the newly relocated Gen 4 heat exchanger leaking coolant into the exhaust making it appear like a blown HG. But...
